Evaluation of Instability Phenomena in a Common Rail Injection System for High Speed Diesel Engines 1999-01-0192
An existing simulation code of a COMMON RAIL Diesel fuel injector, named UNIJET, has been revised and completed, with the aim to predict injection characteristics and to investigate on the instabilities which appeared in experimental tests. Particular attention has been given to the injector control valve modeling, to understand the influence of cavitation on discharge flow characteristics. The valve residual motion, after a Pilot Injection cycle, is responsible for the clear and sudden injected quantity variations of subsequent Master injection, as the time delay between the two cycles decreases. Numerical predictions have been compared with valve lift measurements, and with experimental relation among fuel injected quantity, injection pressure and duration.
Citation: Ficarella, ., Laforgia, D., and Landriscina, V., "Evaluation of Instability Phenomena in a Common Rail Injection System for High Speed Diesel Engines," SAE Technical Paper 1999-01-0192, 1999, https://doi.org/10.4271/1999-01-0192. Download Citation
Author(s):
Ficarella, D. Laforgia, V. Landriscina
Affiliated:
Dip. di Scienza dei materiali, Università di Lecce
Pages: 21
Event:
International Congress & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Technology for Diesel Fuel Injection and Sprays-SP-1415, SAE 1999 Transactions - Journal of Engines-V108-3
Related Topics:
Diesel fuels
SAE MOBILUS
Subscribers can view annotate, and download all of SAE's content.
Learn More »